畜禽保种的理论和方法

综述了畜禽保种的理论与方法，分析了随机保种理论与系统保种理论的优缺点，并展望了保种理论及方法的发展     

线性系统的特征结构配置

本文讨论线性系统状态反馈的特征结构配置问题,给出可配置根系的必要充分条件,指出其结构特征,并用例子说明根系的选择过程及反馈矩阵的求法。     

管网方程Jacobi矩阵的一维压缩存贮与管网图节点标号的优化

利用大型稀疏矩阵的处理技术,用一维数组压缩存贮管网方程F(H)=0的Jacobi矩阵J(H),并应用图论方法进行管网图节点标号的优化,以节省管网分析计算所需的计算机存贮量及计算时间.     

关于E~(n+1)中全臍超曲面和极小超曲面的一个注记

本文利用改进了的一般极大值原理,给出了n+1维欧氏空间E~(n+1)中利齐曲率下方有界的完备连通超曲面为全脐超曲面或极小超曲面的一个充要条件。     

二阶奇异边界值问题解的存在性

在对非线性项没有附加单调性的条件下,讨论了一类二阶奇异值问题解存在的充分条件和必要条件.讨论了非线性项在t=0和t=1时的奇异性,改进了参考文献中的结果.     

Improved Non-Sieving Quadratic Sieve

In this paper, we give about prime numbers and Blum two theorems and one guess integers.We prove the two theorems about Blum integers.Combining the guess with the primitive non-sieving quadratic sieve,we proposed a improved non-sieving quadratic sieve（INQS）.In INQS,we not only reduce the times of squares and modulo n, but also imply another important conclusion,that is,we don＇t need to find the greatest common divisor of two integers as we do in PNQS.By some examples,we compare it with the primitive non-sieving quadratic sieve（PNQS）. It＇s faster to factor a integer by using improved non-sieving quadratic sieve than the primitive one.     

哺乳动物神经纤维的双向脉冲选择性刺激研究

为了研究神经纤维的双向脉冲选择性刺激方法,对神经纤维的各种物理模型进行了研究和比较,建立了哺乳动物有髓神经纤维的仿真系统,并利用该系统对以前工作中提出的３种双向脉冲的选择性刺激方法（单电极,双电极和三电极方法）进行了研究,发现也可以实现复合神经干中细神经纤维的选择性兴奋,证明这些方法同样适用于哺乳动物的神经纤维模型。     

Relationship between echolocation frequency and body size in two species of hipposiderid bats

Frequencies of echolocation calls with maximum power of Himalayan leaf-nosed bats and Horsfield’s leaf-nosed bats during searching phase were 74.1 and 92.1 kHz, respectively. Head-body length, forearm length and body mass of Himalayan leaf-nosed bats were 82.9 mm, 89.7 mm and 59.1 g, respectively; and the corresponding values of Horsfield’s leaf-nosed bats were 68.4 mm, 61.3 mm and 19.7 g, respectively. Echolocation frequency and the three parameters of body size, head-body length, forearm length and body mass, were all negatively correlated, and the correlation coefficients were −0.86, −1.58 and −2.19, respectively. This study thereby proved that echolocation frequency and body size were negatively correlated in the two species of hipposiderid bats.     

室内环境的污染问题及其防治技术

对室内（办公,住宅）几个经常被人们忽视的污染问题进行了分析后指出,目前抽排“油烟”不能解决室内空气污染问题,甚至会加重污染,室内装潢带来的看不见的污染物正日夜危害着人们的健康;办公环境的“病态建筑综合症”及室内各种辐射和建筑色彩的“视觉污染”也日益给身心带来危害,文中讨论了其对人体健康的危害,最后提出了防治这些污染的技术措施。     

带冲突检测载波监听多路访问技术的性能分析

从CSMA／CD的原理出发,分析了网络吞吐量和网络负载之间的关系,并计算出实际网络最大吞吐量的数值．